difficult question for us. we'll keep you posted. >>> new research finds booster seats are getting safe are, but it can be somewhat confusing and daunting for parents when they try to choose the best option for their child. now the insurance institute for highway safety released its ratings of the newest and current child seats on the market which may help make that important purchase even easier. the insurance institute for highway safety has released ratings for 31 models of child booster seats. >> the institute evaluated and rated new booster seats to see how well they position belts on typical 4 to 8-year-old kids. the good news is we have more seats now than ever before that have our top rating. >> reporter: 19 out of 31 models earned that top rating. others still need improvement and a couple are not recommended. >> the problem here is that the lap belt is ride doing high up on the tummy. it's not lying flat across the upper thighs and the shoulder belt is too far off the shoulder rather than sitting snug